<i>Which mattress is the best?</i>

When you are buying a mattress, look for one that comfortably supports your shoulders, hips and lower back. If you have low back pain, researchers say a medium-firm mattress is best. Do not rely on the advertised level of firmness, however, which may vary from brand to brand. Instead, spend plenty of time lying on display mattresses to get a feel for what is comfortable.